Effects of several treatments in shrimp pond effluents was studied.Phosphate,total phosphorous,phytoplankton,zooplankton and bacteria,dissolved chemical oxygen demand,paniculate chemical oxygen demand,and total chemical oxygen demand were measured under five treatments,in which four biofilters were mussels Pernav Viridis,red algae Gracilaria tenuistipitata var.Liui Zhang et Xia,bacteria and mixture of these three organisms above,respectively,and the fifth one was the self~purify treatment.The results showed that 1) there were differences among the trends of fluctuation in these nutrient content,and interrelations among some nutrients were observed,2) the concentration of dissolvable nitrogen and the size of bacteria population decreased by all treatments,3) contents of COD can not be removed,but the forms of COD were transformed,4) mussel removed phytoplankton obviously.
[1] Kinne P N, Samocha T M, Jones E R, et al. 2001.Characterization of intensive shrimp pond effluent and preliminary studies on biofiltration[J]. North American Journal of Aquaculture, 63(1):25-33.
[2] Haglund K, Pedersen M. 1993. Outdoor pond cultivation of the subtropical marine red alga Gracilaria tenuistipitata in brackish water in Sweden. Growth, nutrient uptake, co～cultivation with rainbow trout and epiphyte control[J].Journal of Applied Phycology, 5:271-284.
[3] Joel H.1996.利用养殖贻贝改善富营养化峡湾生态系统的水质[J]. AMBIO(中译本),25(5):355-361.
[6] Gross A, Boyd C E, Wood C W. 1999. Ammonia volatilization from freshwater fish ponds[J]. Journal of Environmental Quality, 28(3):793-797.
[7] Kassila J, Hasnaoui M, Droussi M, et al. 2001. Relation between phosphate and organic matter in fish ～pond sediments of the Deroua fish farm(Beni～Mellal, Morocco):Implications for pond management[J]. Hydrobiologia, (450):57-70.
[9] Gautier D, Amador J, Newmark F. 2001. The use of mangrove wetland as a biofilter to treat shrimp pond effluents:Preliminary results of and experiment on the Garibbean coast of Colombia[J]. Aquaculture Research,32(10):787-799.
